English

Resolving subcategories and dimensions in recollements of extriangulated categories

Representation Theory 2022-05-24 v2

Abstract

Recently, Wang, Wei and Zhang introduced the notion of recollements of extriangulated categories. In this paper, let (A,B,C)(\mathcal{A},\mathcal{B},\mathcal{C}) be a recollement of extriangulated categories. We provide some methods to construct resolving subcategories in (A,B,C)(\mathcal{A},\mathcal{B},\mathcal{C}). As applications of the Auslander-Reiten correspondence, we get the gluing of cotilting modules in a recollement of module categories for artin algebras. We also give some bounds of resolution dimensions of the categories involved in (A,B,C)(\mathcal{A},\mathcal{B},\mathcal{C}) with respect to resolving subcategories, which generalize some known results.

Keywords

Cite

@article{arxiv.2111.08549,
  title  = {Resolving subcategories and dimensions in recollements of extriangulated categories},
  author = {Xin Ma and Tiwei Zhao and Xin Zhuang},
  journal= {arXiv preprint arXiv:2111.08549},
  year   = {2022}
}

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21 pages